2020 Toyota Sienna Electrical Problems

Your pre-collision system, lane assist, and airbag warning lights came on while driving. The dealer replaced a fuse in the engine control unit, but the problem came back 10 days later. The dealer then determined the wiring harness needs to be replaced, but it was on backorder and your vehicle wasn't repaired. This happened at around 60,000 miles.

Your car is experiencing multiple random electrical issues: turn signals activate on their own, the radio volume changes unexpectedly, the CarPlay USB connection drops and reconnects repeatedly, and the engine hesitates during acceleration when ECO mode engages. These symptoms suggest an underlying electrical or computer system problem. The issues may require diagnostic testing to identify the root cause, which could involve replacing a faulty control module, fixing wiring connections, or updating software.

Your car's speakers occasionally emit a sudden, extremely loud piercing noise that lasts about a second. This happens randomly and hasn't been reproduced at the dealership, with no warning signs beforehand. The noise could distract you while driving or potentially harm passengers' hearing, especially children. The fix will likely involve diagnosing the audio system for electrical faults or speaker defects and replacing or repairing the faulty components.

DEAR TO WHO CONCERN THIS CASE, ON AUGUST 26, 2019, I PURCHASED A BRAND NEW CAR, SIENNA, TOYOTA 2020 FROM PRINCIPLE TOYOTA ON 7370 WINCHESTER RD, MEMPHIS, TENNESSEE 38125. I DISCOVERED THAT THERE ARE MAJOR ISSUES WITH THE CAR. I WAS GUARANTEED BY THE DEALER THAT THE CAR IS IN PERFECT WORKING CONDITION BEFORE PURCHASE. HOWEVER, AFTER DRIVING THE NEW CAR FOR FEW DAYS, THE KEY REMOTE STOPPED WORKING AND I REVISITED THE DEALERSHIP TO GET IT FIXED. I TALKED TO JIMMY ROCKER, ONE OF THE SALE ASSOCIATES, AND HE TRANSFERRED ME TO THE TOYOTA SERVICE CENTER. AFTER FEW MORE DAYS OF DRIVING THE CAR, MORE PROBLEMS EMERGED. THE CAR WARNING MONITOR INDICATED 'AWD SYSTEM MALFUNCTION 2WD MODE ENGAGED, CONTACT YOUR DEALER' AS WELL AS 'BRAKE OVERRIDE MALFUNCTION, VISIT YOUR DEALER'. NOT ONLY THE WARNINGS, THE CAR SUDDENLY STOPPED ON THE HIGHWAY. LUCKILY THERE WERE NO CARS BEHIND ME, OTHERWISE I WOULD HAVE BEEN INJURED. THE SECOND TIME I REVISITED THE DEALERSHIP, I ENCOUNTERED CHRIS THOMPSON, THE NEW CAR DIRECTOR AT PRINCIPLE TOYOTA. I SUGGESTED HIM TO INSPECT MY CAR AND FINDING A SOLUTION FOR IT. I HAVE TRIED TO EXPLAIN TO HIM HOW IT WAS DANGEROUS FOR ME AND MY FAMILY. I HAVE TWO KIDS WHO ARE DRIVING WITH ME AND IF THE SITUATION HAPPENED AGAIN, WE WOULD HAVE BEEN FATALLY INJURED. CHRIS DID NOT LISTEN TO MY STORY BUT INSTEAD TOLD ME THAT THE CAR DOES NOT BELONG TO HIM AND HE JUST WALKED AWAY IN FRONT OF OUR CONVERSATION. I WAS VERY DISAPPOINTED BECAUSE OF HIS INDIFFERENCE TOWARDS MY SITUATION AND THE TYPE OF CUSTOMER SERVICE I RECEIVED WAS NOT EXPECTED FROM A WELL-KNOWN COMPANY LIKE YOURS. TO ENSURE THE SAFETY OF KIDS AND MY FAMILY, I DEMAND A REPLACEMENT OF THE CAR AS WELL AS ANY COMPENSATION ASSOCIATED MY SPENT TIME AT THE DEALERSHIP. I HOPE THERE WILL BE A REASONABLE SOLUTION FOR MY CASE. BEST REGARDS, [XXX] REDACTED TO PROTECT PERSONALLY IDENTIFIABLE INFORMATION PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6). *CC *TR